U.S. patent number 3,925,911 [Application Number 05/464,960] was granted by the patent office on 1975-12-16 for ski boot.
This patent grant is currently assigned to Gertsch AG. Invention is credited to Richard Erlebach.
United States Patent |
3,925,911 |
Erlebach |
December 16, 1975 |
Ski boot
Abstract
A ski boot wherein the toe portion and the heel portion of the
ski boot sole which is essentially of a rigid or stiff construction
are formed of elastically compressible material.
Inventors: |
Erlebach; Richard
(Kleinwalsertal, OE) |
Assignee: |
Gertsch AG (Interlaken,
CH)
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Family
ID: |
27183645 |
Appl.
No.: |
05/464,960 |
Filed: |
April 29, 1974 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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282548 |
Aug 21, 1972 |
3834723 |
Sep 9, 1974 |
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Foreign Application Priority Data
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Aug 19, 1971 [DT] |
|
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2141675 |
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Current U.S.
Class: |
36/117.4;
280/612; 280/618; 280/611; 280/613; 280/637 |
Current CPC
Class: |
A63C
9/08578 (20130101); A63C 9/00 (20130101); A63C
9/0805 (20130101); A63C 9/0846 (20130101); A43B
1/0054 (20130101); A63C 9/0802 (20130101); A63C
9/08507 (20130101); A43B 5/0419 (20130101); A63C
9/007 (20130101); A63C 9/003 (20130101); A63C
9/08564 (20130101); A63C 9/086 (20130101) |
Current International
Class: |
A43B
5/04 (20060101); A63C 9/00 (20060101); A63C
9/086 (20060101); A63C 9/08 (20060101); A43B
000/00 () |
Field of
Search: |
;36/2.5R,2.5AL,25,31,32R |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Lawson; Patrick D.
Attorney, Agent or Firm: Kleeman; Werner W.
Parent Case Text
CROSS-REFERENCE TO RELATED CASE
This is a divisional application of my copending commonly assigned
United States application Ser. No. 282,548, filed Aug. 21, 1972,
now U.S. Pat. No. 3,834,723 granted Sept. 9, 1974 and entitled "Ski
Boot And Use Thereof As Part Of A Releasable Ski Binding".
Claims
What is claimed is:
1. A ski boot embodying a ski boot sole having a toe portion and a
heel portion and an intermediate sole portion formed of essentially
rigid material arranged between said toe portion and said heel
portion, said toe portion and said heel portion of said ski boot
sole being formed of an elastically compressible material.
2. A ski boot embodying a ski boot sole having a toe portion and a
heel portion and an intermediate sole portion formed of essentially
rigid material arranged between said toe portion and said heel
portion, said toe portion and said heel portion of said ski boot
sole being formed of an elastically compressible material, said ski
boot sole comprising an essentially plate-shaped rigid support
portion which at the region of said toe portion and said heel
portion upwardly tapers to define respective wedge-shaped portions,
said heel portion and said toe portion of the ski boot sole being
in the form of wedges formed of said elastically compressible
material, each of said wedges having a cutting edge and said
cutting edges confronting one another.
3. The ski boot as defined in claim 1, wherein said ski boot
constitutes an outer ski boot.
4. The ski boot as defined in claim 1, wherein said toe portion and
said heel portion which are each formed of an elastically
compressible material provide a rolling-off action at the ground
both at the toe portion and the heel portion during walking with
the ski boot.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a new and improved construction of
ski boot manifested by the features that the toe portion and the
heel portion of the ski boot sole which is essentially of a rigid
or stiff construction are each formed of an elastically
compressible material.
The invention further relates to the use of the aforementioned ski
boot as part of a releasable ski binding, commonly referred to in
this particular art as a safety ski binding, wherein connection
elements which cooperate with one another until exceeding a
boundary load have a part thereof arranged at the ski and another
part within the ski boot sole. According to the invention, the
connection elements are arranged at the region of the rigid
intermediate or central portion of the ski boot sole and cooperate
with one another through the walking or tread surface of the sole
of the ski boot.
Basically, the previously briefly described ski boot affords
considerable ease during movement without the skis since the
flexible terminal or end portions of the sole render possible a
rolling-off of the sole at the ground or other support surface.
Furthermore, the flexible construction of the toe portion and heel
portion of the ski boot is of particular significance in
conjunction with a safety ski binding of the previously mentioned
type.
In particular, the rigid intermediate or central portion of the ski
boot sole which contains the components of the ski binding can be
maintained the same for each size of ski boot, whereby also the
lever arm which is decisive during vertical release of the ski
binding remains constant and the ski binding need not be adjusted
as a function of the size of the ski boot. Additionally, this lever
arm, which otherwise would extend up to the respective front or
rear end of the ski boot sole, becomes shorter. It is particularly
advantageous to arrange the connection elements or components near
the toe and the heel of the ski boot, that is to say, at the
respective front and rear edge of the rigid intermediate portion,
wherein owing to the flexible construction of the toe and heel
during a fall of the skier towards the front or the rear, initially
only always the respective front or rear connection elements
respond.
The prior art is already familiar with a safety ski binding, as for
instance taught in German patent publication 1,803,954, in which
the holding elements are designed in the form of supports which are
mounted at the ski in front of and behind the ski boot sole. These
supports are provided with conical-shaped recesses serving as
locking elements in which engage spherical-shaped anchoring
elements in the ski boot-holding position, these anchoring elements
serving as blocking bodies. The spherical-shaped anchoring elements
are each subjected to the prebias of a helical spring, the pre-bias
or loading force of which can be adjusted. Instead of using
spherical-shaped anchoring elements there can be also employed
those designed in the form of cams and provided with impact noses
which engage behind holding noses of holding components movable in
the lengthwise direction of the ski and, if desired, themselves
subjected to a pre-bias. In each case, the anchoring elements
extend outwardly from the sides of the ski boot sole. However, it
has been found that such type apparatus is unable to satisfy
existing requirements not only because of the presence of the
protruding anchoring elements, but also owing to frequent
disturbances which arise during the release action. Moreover, with
such type equipment, especially when skiing in uneven terrain
during which the ski tends to flutter, there exists the danger of
undesired or premature release of the equipment.
SUMMARY OF THE INVENTION
Now it is a primary object of the present invention to provide an
improved construction of ski boot which is comfortable to wear and
particularly suitable for walking without skis.
A further important object of the present invention relates to an
improved construction of ski boot which, if desired, can be
effectively employed as a part of a safety ski binding.
Still a further object of the present invention relates to an
improved construction of ski boot which, if desired, can serve as
part of a safety ski binding while avoiding the aforementioned
drawbacks of the prior art constructions.
A further object of the present invention is to overcome as
extensively as possible the type of disturbances indicated above
which are present with the prior art constructions.
A further significant object of the present invention is to provide
a ski boot construction which can be employed as part of a safety
ski binding and which is designed to avoid that any components of
the release mechanism of the safety ski binding protrude from the
ski boot, since otherwise the danger would exist that upon
impacting same with hard objects such could become damaged, and
thus when placed into their operable condition no longer carry out
reliable release of the ski boot from the ski at the instant when
there arises load conditions to which the release mechanism should
be responsive.
Since the ski boot sole serves as a treading or walking surface
components of the release mechanism which are arranged beneath the
ski boot sole normally are not subjected to any damage during
walking provided that the support of the ski boot does not just
happen to impact at the relevant location against a sharp and hard
object. However, even such danger of damage can be effectively
safeguarded against by carrying out a special construction and
arrangement of the corresponding components of the release
mechanism arranged at the ski boot sole.
As a result, a further advantage is realized in that during the
clamping or holding position at the ski practically no holding
components are subjected to access and impact of other objects,
since the ski boot sole itself practically affords a dampening
protection for the components of the release mechanism housed in
the ski boot sole.
Additionally, as a still further notable advantage there is
realized the effect that the components of the equipment retaining
the ski boot are arranged in close neighboring relationship and no
longer at large distances which are determined by the length of the
boot sole, so that during elastic deformation of the ski,
especially when skiing over uneven or hilly terrain, also there
practically does not occur any change in the spacing between the
relevant holding and anchoring components.
Finally, the possibility of accommodating the release mechanism
within the ski boot sole affords new possibilities for special
arrangements and construction of the individual components thereof,
something which previously was not possible owing to the
extensively unprotected position thereof at the ski. It is indeed
already known to the art from German Patent Publication 1,929,800
to design the ski boot sole as a two-part member and to provide
both parts of the sole with a releasing mechanism and a catching
mechanism so that in case of the occurrence of the release action
the ski boot releases with its upper part from the lower part,
however cannot move too far particularly owing to the construction
of the catching mechanism as a windable catching cable. Due to this
construction there is, however, only solved the problem of avoiding
the use of catching mechanism components located externally of the
ski boot. Yet, the lower sole plate is connected with the ski by
means of a slide connection. Use is also made with this invention
to the extent possible of the prior art teaching of placing the
release mechanism as closely as possible to the endangered leg.
Apart from the one constructional embodiment of the invention
wherein the holding components are constructed as locking elements
and the anchoring elements as blocking bodies, the inventive
teachings can be also realized in that the holding components are
constructed and used as blocking bodies and the anchoring elements
as locking elements. Accordingly, the actual release mechanism can
be mounted either directly at the ski or, however, installed at the
ski boot sole. An advantage of the invention also resides in the
fact that certain basic adjustments can be more or less
standardized and need no longer be adjusted from case to case as a
function of the size of the ski boot or sole. Thus, it is
particularly advantageous to install the actual release mechanism
in the ski boot sole, so that the skier, during shifting his weight
from one ski to the other, always experiences the same release
conditions when the relevant skis possess the same holding
components and anchoring elements and in the same spatial
arrangement. Since one aspect of this development resides in the
feature of employing more or less single-piece, for instance molded
ski boots which are relatively expensive, it is possible to insure
through mounting of the release mechanism in the particularly stiff
or rigid ski boot sole that it is no longer necessary to provide
each ski with a special expensive binding which possesses the
release mechanism if it is desired to alternately use a number of
pair of skis.
Within the framework of the invention it is recommended to be able
to adjust the boundary load of all locking elements by means of a
common adjustment device. Such can be rendered accessible from the
underside of the soles, the sides of the soles and also from the
top of the ski.
It should be understood that the invention also permits use of
spherical-type blocking bodies which in particular can be
pre-biased by springs. Special and particularly advantageous
constructions of these components will be considered in greater
detail hereinafter in conjunction with the description of the
drawings.
The release mechanism can be also provided with permanent magnets
which retain the blocking bodies in their position or respectively
at the locking elements. Permanent magnets serving for securing ski
boots to the ski are already known to the art, as evidenced for
instance by Swiss patent 321,915 and U.S. Pat. No. 2,276,826. In
this regard it is also recommended to employ exchangeable permanent
magnets, so that in each instance, as a function of the desired
boundary loads, different strength permanent magnets can be
utilized. The effectiveness of permanent magnets becomes
particularly great if there is employed as the locking elements
ferromagnetic plates.
As already indicated above it is basically recommended to arrange
the blocking bodies and locking elements in such a manner that the
effective center point of the boundary loads of all blocking bodies
is approximately located at the extension of the axis of the leg.
In many instances it is however completely acceptable to arrange
such effective center point approximately in front of the actual
extended leg axis.
In order to be able to release the equipment without difficulty and
to detach the ski it is recommended to render the release mechanism
releasable by the action of an actuation element, for instance the
tip of a ski pole.
It should be understood that in any case the ski boot should be
designed as rigidly as possible at the parts cooperating with the
release mechanism, as such is anyway the case for the present most
extensively employed ski boots. Owing to the fact that the holding
components and the anchoring elements no longer engage at the front
and rear at the ski boot sole it is possible in particular,
according to a further embodiment of the invention, to construct
the heel of the sole and under circumstances however also the toe
of the sole, from less rigid, especially elastically compressible
material, such as soft rubber, foamed material or the like. One
advantage of such measure resides in the fact that the skier can
walk much better with the ski boots when not attached to the skis
than if the ski boot heel portion is completely rigid as was
previously the case.
In the event that the ski boot is provided with a double-sole then
it is recommended, according to a further embodiment of the
invention, to have the release mechanism effective between the
lower sole portion and the ski and to ensure that the lower sole
portion possesses at the rear a receiving mechanism, in particular
a type of gaiter in which there can be guidingly inserted the ski
boot upper.
The advantage of this measure resides in the fact that the lower
sole portion with the corresponding parts of the release mechanism
can be released from the upper sole portion and the therewith
fixedly connected ski boot upper, so that the skier after release
of the upper sole portion and the ski boot upper from the receiving
mechanism can walk about without the lower sole portion. Also in
this way the skier is considerably less bothered during walking
than when using prior conventional heavy ski boots. The receiving
mechanism itself need not be equipped with a corresponding release
mechanism, rather can provide a fixed connection between the lower
and upper sole portions when placed at the ski, since upon reaching
and exceeding the boundary load the release mechanism between the
ski and the lower sole portion becomes effective.
The use of a gaiter also improves striding or stepping-out during
skiing, especially if such are articulated to the sides of the
lower sole portion and pivotable about a pivot axis extending
approximately transverse to the axis of the sole.
According to a further embodiment of this construction of the
invention it is recommended to connect the upper sole portion with
the lower sole portion through the agency of a lever mechanism in
the manner of a hinge, and thus to employ in particular holding
magnets which function as a release mechanism with appropriate
ferromagnetic plates. Also in this case an embodiment of such type
construction will be explained more fully in conjunction with the
description of the drawings to follow.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood and objects other than
those set forth above, will become apparent when consideration is
given to the following detailed description thereof. Such
description makes reference to the annexed drawings wherein like
reference numerals have been generally employed throughout for the
same or analogous components, and wherein:
FIG. 1 is a vertical fragmentary sectional view through a ski boot
containing an integrated releasable or safety ski binding designed
according to the teachings of the present invention;
FIG. 2 is a horizontal cross-sectional view through a slightly
modified embodiment of ski boot from that depicted in FIG. 1;
FIG. 3 is a vertical fragmentary sectional view through a variant
construction of ski boot from that shown in FIG. 1 and which
depicts a kinematic reversal of the components depicted in FIG.
1;
FIG. 4 is a vertical view, partly in section, through a further
embodiment of the invention employing magnetically effective
holding components;
FIG. 5 is a top view of part of the construction depicted in FIG.
4;
FIG. 6 illustrates a vertical sectional view of a double-sole ski
boot designed according to the teachings of the present
invention;
FIG. 7 schematically illustrates details of the arrangement of FIG.
6 and specifically only the ski boot with the receiving device in
two different traveling or walking positions; and
FIG. 8 is a schematic fragmentary front view and a partial
sectional view through a different embodiment of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Describing now the drawings and initially considering the exemplary
embodiment of inventive ski boot B advantageously designed as part
of a safety or releasable ski binding as depicted in FIG. 1, it is
to be understood that holding members or parts 1a and 1b are
connected through the agency of suitable fastening means, such as
screws 50 at the ski 1. These holding members 1a and 1b are
provided with approximately vertically upstanding locking elements
1c having recesses 1e with which partially engage spherical shaped
or conical-shaped blocking or arresting bodies 2 in a locking
position for retaining the ski boot B at the ski 1. In the
arrangement of FIG. 1 the blocking bodies 2 are of substantially
conical-shaped configuration, whereas in the modified version of
FIG. 2 to be discussed shortly hereinafter these blocking bodies 2
are in the form of spherical-shaped members or balls. In either
case, the blocking bodies or body members 2 are pre-biased by
resilient means, such as helical springs 3 which, in turn, are
appropriately adjustable by means of an adjustment device 4 as
concerns their tensioning or clamping force. The adjustment device
4 is accessible from the underface of the sole 5 of the ski boot B,
yet is advantageously rearwardly inset from the underside or
walking or tread surface of the boot sole 5 to such an extent that
during walking there is practically not possible any automatic
unintentional re-adjustment of such adjustment device 4. By
suitably rotating the adjustment device 4 it is possible, as
indicated above, to appropriately pre-bias the loading springs 3 as
is well known in this particular art. Now the sole 5 of the ski
boot B is provided at the toe portion 6a and the heel portion 6b
with soft elastic compressible portions or sections 6 formed, for
instance, from soft rubber or soft plastic. These soft elastic
compressible portions 6 define the terminal or end portions of the
ski boot sole 5, the intermediate or central portion 6c of which
ski boot sole 5 is formed of any suitable conventional rigid sole
material, such as a rigid plastic. Hence, it is to be understood
that the ski boot sole 5 comprises an essentially plate-shaped
rigid support portion which at the region of the toe portion 6a and
the heel portion 6b of the ski boot B upwardly tapers to define
respective wedge-shaped portions 6d. Moreover, the toe portion 6a
and the heel portion 6b of the sole are also in the form of wedges
6e formed of elastically or elastic compressible material wherein
the respective cutting edge or apex 6f confront one another as
clearly shown in FIG. 1. As a result, one advantage thus realized
is that walking with the ski boot B is rendered considerably less
difficult than if there were used a ski boot sole which was
completely rigid throughout. The biasing springs 3 and the blocking
body members 2 are suitably mounted at the sole 5, for instance in
recesses 51 of the specially shaped or injection molded soles. A
further advantage realized by virtue of the previously described
arrangement is that, assuming a fall of the skier towards the
front, the elastically compressible material 6e at the toe portion
6a of the ski boot B is initially compressed, with the result that
the locking element 1c and blocking element 2 at the region of the
toe portion of the boot acts as a pivot for the other
intercooperating locking element 1c and blocking element 2 at the
rear of the boot. Hence, the lever arm decisive for vertical
release of the binding which extends between the front and rear
locking and blocking elements just considered remains constant so
that the binding need not be adjusted as a function of the size of
the boot. Also as previously explained this lever arm is shorter
than would be otherwise the case if the elastically compressible
material were not provided. The same observations hold true during
backward fall of the skier, whereby in this case now the rear
intercooperating blocking and locking elements serve as the pivot
point for such release action.
Although in many instances it is completely satisfactory to employ
in each case only one blocking body member 2 at the front and rear
of the ski boot B, the effective center point of which is only
slightly located in front of the extended leg axis and the spacing
of which is considerably less than the length of the sole 5,
nonetheless the security and exact response, especially with a
design corresponding to the construction of ski boot as depicted in
FIG. 2, is considerably increased in that at the front and rear
there engages in each case a pair of blocking body members 2 with
the locking elements 1c.
Now with the modified version of ski boot construction as depicted
in FIG. 3 and in contrast to the design of FIG. 1, the adjustment
mechanism 4 with the springs 3, the blocking bodies 2 and the
associated supports or mountings are fixedly arranged at the upper
or top surface of the ski 1, whereas the locking elements here
indicated by reference character 1d, are mounted at the ski boot
sole 5. In other words, this embodiment of ski boot is intended to
indicate that the components of FIG. 1 can be reversed as far as
their arrangement is concerned. It should be further understood
that the sole 5 is provided with a sufficiently hard and
wear-resistant material at least at the region of the locking
elements 1d in the event that such are not designed as additional
elements and inserted into the ski boot sole 5. The stepping-out or
removal of the ski boot B from the ski 1 is simplified in that the
release mechanism can be disengaged at least at one side, here for
instance at the front side, in that for example a ski pole tip 7
can be pressed against a release element 8 accessible from
externally of the ski boot B. The parts of the binding arranged at
the ski according to the embodiment of FIGS. 1-3 can be adhesively
bonded with the ski 1 in the event that a threadable connection is
not desired.
Additionally, it is advantageous for the embodiment according to
FIG. 3 to support the ski boot sole 5 at raised portions or
projections 9 in order that the front toe portion 6a and heel
portion 6b of the ski boot sole 5 does not bear at all upon the top
surface or face of the ski 1.
The adjustment mechanism 4 accessible according to the embodiment
of FIG. 3 from the top of the ski 1 is provided with a cam nut
member 10 or equivalent device mounted between two bearing or
holding jaws 11, so that as a function of the position of the cam
member 10 or a suitable cam disk relative to a scale 12 the spacing
of both holding jaws 11 and thus the pre-bias of the blocking
bodies 2 can be desirably altered. A similar type adjustment
mechanism 4, although arranged at the ski boot sole, has been shown
in the embodiment of FIG. 2.
Continuing, according to the embodiment of FIGS. 4 and 5 there are
screw or threadably connected to the top of the ski 1 a number of
plate-shaped magnets, especially permanent magnets 12, 12a. In this
connection the permanent magnet 12, for instance, consists of an
approximately flat, substantially U-shaped unit, in the
intermediate space of which there can be inserted the additional
small plate-shaped permanent magnets 12a. Depending upon the
desired release force the permanent magnet 12 and the permanent
magnets 12a can be threadably disconnected or exchanged by others.
Each leg of the permanent magnet 12 possesses, for instance, a
holding force of 35 kilograms, the outer ones of the three
plate-shaped permanent magnets 12a possess a holding force of, for
instance, 20 kilograms and the intermediate plate-shaped holding
magnet 12a a holding force of, for instance, 15 kilograms. While
the permanent magnet 12 is directly threadably connected to the ski
1 the plate-shaped permanent magnets 12a are threadably connected
through the U-shaped permanent magnet 12 as indicated by the screws
12b. This permanent magnet 12 possesses at each of its free
external sides two approximately semispherical-shaped recesses 13
designed as locking elements for approximately semispherical-shaped
raised portions serving as blocking bodies 14 located at the
underside of a ferromagnetic plate 15 which forms the upper
boundary of a hollow compartment 16 located at the ski boot sole 5.
The permanent magnets 12 and 12a and the ferromagnetic plate 15
function as a release mechanism and the locking elements 13 and
blocking body members 14 serve as adjustment aids. The
ferromagnetic plate 15 is, for instance, formed as a thin steel
plate.
According to the embodiment of the invention as depicted in FIGS. 6
and 7 the release mechanism 17 which is partially mounted at the
ski 1, and which here has only been schematically indicated,
engages in a hollow portion at the lower sole part 5a. This is
designed such that the upper, extensively thinner and also
elastically flexible sole part 5b can be pushed at the front into a
recess 18 and at the rear can be fixedly clamped by means of a
gaiter 19 serving as a receiving device or mechanism. This gaiter
19 is hingedly connected at both sides by screws 20, which also can
be designed as continuous threaded bolts, with the lower sole
portion 5a, so that the gaiter 19 can be pivoted about this
horizontally extending pivot axis, as particularly well seen by
referring to FIG. 7. In FIG. 7 there is shown by full-lines the
position where the gaiter 19 practically protrudes vertically from
the ski 1, whereas by means of the broken lines there is depicted
the position in which the lower ankle of the skier, relative to the
ski 1 and the sole 5, which in this instance for the sake of
simplicity has been shown as a one-piece or integral structure,
extends at an angle essentially deviating from 90.degree.. It
should be understood that the boot upper 53 is elastically bendable
to such an extent that this position can be realized.
According to the embodiment of FIG. 8 a pair of permanent magnets
20 and an additional exchangeable permanent magnet 20a are
threadably connected by the screws 50 or otherwise suitably
exchangeably secured to the ski 1. Additionally, there is located
at the top of the ski a hinge arrangement 21a with a hinge joint
21, this hinge arrangement being operatively connected through the
agency of a lever 22 having a further hinge joint 23 with a
rotatable or pivotal plate 24 which can be inserted from below into
the lower sole portion 5a. The lower sole portion 5a is
additionally provided at the underside with a ferromagnetic plate
25, the cam-shaped raised portions 26a of which serving as blocking
bodies 26 can be inserted into suitable recesses 27a of the
permanent magnets 20 serving as locking elements 27 when the lower
sole portion 5a is placed against the permanent magnets 20 and 20a
respectively. Additionally, the lower sole portion 5a is provided
with a receiving device or mechanism by means of which the upper
sole portion 5b can be connected with the lower sole portion 5a.
This receiving device has only been schematically illustrated, but
will be understood to comprise a clamping bracket or release lever
28, a cable traction means 29 and an adjustment mechanism 30 and
defines a frame-like structure into which there can be inserted the
upper sole portion 5b. In the event that the skier wishes to step
out of the ski 1 then it is only necessary to rearwardly and
downwardly press the release lever or bracket 28, so that such
skier can climb out of the frame-shaped structure by means of the
boot upper and the upper sole portion 5b, and therefore, can step
out of the lower sole portion 5a which remains attached with the
ski 1 via the previously mentioned components. The ski boot B is
thus considerably less heavy since it need only comprise a
relatively thin and therefore also light sole. Nonetheless there is
insured that in the clamped position there is afforded a fixed
connection between the ski boot B and the ski 1 although such boot
raises from the ski 1 and the permanent magnets 20 and 20a and
falls forwardly by means of the lower sole portion 5a upon reaching
or exceeding the adjusted boundary load. The lever 22 in this case
functions as a catch mechanism. It should be understood that it can
be designed to be elastic. It can be composed of a number of
individual components and retained together by means of elastic
elements, for instance springs. The structure according to FIG. 8
is exceptionally well-suited as a ski binding for downhill and
cross-country skiing.
The lower face of the sole can be also covered during walking with
a cover plate in order to protect the release mechanism and other
parts arranged in the sole during walking or treading without
skis.
For a great many fields of application it is advantageous, for
instance, according to the construction of FIG. 6, to build the
release mechanism at the top of the ski or, in fact, partially in
the ski itself in that it can be, for instance, threaded to the ski
with four screws or already partially embedded in such ski during
fabrication thereof.
It is recommended to arrange the release mechanism in such a manner
that the locking elements and blocking bodies are located at the
front portion of the release mechanism at the center of the ski
between the end of the ski and the ski tip while not taking into
account the upwardly bent ski tip portion.
While there is shown and described present preferred embodiments of
the invention, it is to be distinctly understood that the invention
is not limited thereto, but may be otherwise variously embodied and
practiced within the scope of the following claims.
* * * * *